set world records in 100 and 200 meters in 1988; won 3 gold medals at '88 Olympics (100m, 200m, 4x100m relay); Sullivan Award winner (1988); retired in 1989; named as co-chairperson of President's Council on Physical Fitness and Sports in 1993; sister-in-law of Jackie Joyner-Kersee; died of suffocation during an epileptic seizure in 1998.